This manga is fire like the whole psychological thriller part of the manga about how the y uncover the true personality and the nature and environment of class 2D and how a simple things made such huge difference in between people interactions. This manga is really good and signals at many things when ch we do not notice though present in our daily lives. It has an interesting premise and the whole story is carried out in a weel mannered way and the plot twists are amazing. This manga is one of the best thriller mangas i have read. 10/10 score for being so shortyet so impactful and entertaining to read .